The Muffler,exhaust, cataloged under National Stock Number 2990-01-577-1044, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Filtration Inc.. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-577-1044 |
| Primary Part Number | 49120B |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S1-38579 | Howard Porter Pty Ltd - Atf Steelbro Family Trust (NZL) |
| 49120B | Cummins Filtration (AUS) |
| 49120B PRIMARY | Cummins Filtration Inc. (USA) |
| DF01-333-11 | Mpower Projects Pty Limited (AUS) |
| Reference | Meaning |
|---|---|
| S1-38579 | 5/9 Secondary reference Steel Bro Nz Ltd |
NSN 2990-01-577-1044 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-577-1044 has 4 manufacturer part numbers on file: S1-38579 (Howard Porter Pty Ltd - Atf Steelbro Family Trust), 49120B (Cummins Filtration), 49120B (Cummins Filtration Inc.), DF01-333-11 (Mpower Projects Pty Limited).
Key specifications for 49120B: Special Features: BODY SHAPE: ROUND;TYPE 1;SPARK ARRESTER; Part Name Assigned by Controlling Agency: ROUND MUFFLER TYPE 10. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.